I'm not sure that people are really expecting to see the end of oil, including for plastic; more likely it's the necessity to ramp up rhetoric. If you demand "the end of oil", you might get a few percentage reduction in production. If you demand "a small decrease in production", you get nothing.
Mind you, the plastics process itself produces greenhouse gases, and occasionally the hugely wasteful event of flaring. Every now and again either Exxon or Shell lights a huge volume of gas on fire which can be seen in a fifty mile radius near my house to remind us that individual action on CO2 emission is meaningless. It needs to be banned entirely. https://www.bbc.co.uk/news/uk-scotland-edinburgh-east-fife-4...
Mind you, the plastics process itself produces greenhouse gases, and occasionally the hugely wasteful event of flaring. Every now and again either Exxon or Shell lights a huge volume of gas on fire which can be seen in a fifty mile radius near my house to remind us that individual action on CO2 emission is meaningless. It needs to be banned entirely. https://www.bbc.co.uk/news/uk-scotland-edinburgh-east-fife-4...